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use anonymous files for here-documents if available and the document size exceeds pipe capacity; fixes to build if multibyte characters are unavailable; fix potential overflow with extrememly long $'...' strings; fix for readline redisplay highlighting with a zero-length region
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@@ -921,9 +921,9 @@ The array variable
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.B BASH_REMATCH
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records which parts of the string matched the pattern.
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.B Bash
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unsets
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unsets each element of
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.B BASH_REMATCH
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before attempting the match, so if there is no match, it remains unset.
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before attempting the match, so if there is no match, it remains empty.
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The element of
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.SM
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.B BASH_REMATCH
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